[Free] 2017(Oct) Dumps4cert Testinsides Cisco 200-125 Dumps with VCE and PDF Download 141-150

Dumps4Cert 2017 Oct Cisco Official New Released 200-125
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CCNA Cisco Certified Network Associate CCNA (v3.0)

Question No: 141 – (Topic 3)

Refer to the exhibit.

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When running OSPF, what would cause router A not to form an adjacency with router B?

  1. The loopback addresses are on different subnets.

  2. The values of the dead timers on the routers are different.

  3. Route summarization is enabled on both routers.

  4. The process identifier on router A is different than the process identifier on router B.

Answer: B Explanation:

To form an adjacency (become neighbor), router A amp; B must have the same Hello interval, Dead interval and AREA numbers

Question No: 142 DRAG DROP – (Topic 3)

Drag each definition on the left to the matching term on the right.

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Answer:

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Question No: 143 – (Topic 3)

Refer to the graphic.

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R1 is unable to establish an OSPF neighbor relationship with R3. What are possible reasons for this problem? (Choose two.)

  1. All of the routers need to be configured for backbone Area 1.

  2. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3.

  3. A static route has been configured from R1 to R3 and prevents the neighbor adjacency from being established.

  4. The hello and dead interval timers are not set to the same values on R1 and R3.

  5. EIGRP is also configured on these routers with a lower administrative distance.

  6. R1 and R3 are configured in different areas.

    Answer: D,F Explanation:

    This question is to examine the conditions for OSPF to create neighborhood.

    So as to make the two routers become neighbors, each router must be matched with the following items:

    1. The area ID and its types;

    2. Hello and failure time interval timer;

    3. OSPF Password (Optional).

      Question No: 144 – (Topic 3)

      A network administrator is trying to add a new router into an established OSPF network. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. Given the information in the partial configuration shown below, what configuration error is causing this problem?

      Router(config)# router ospf 1

      Router(config-router)# network 10.0.0.0 255.0.0.0 area 0

      1. The process id is configured improperly.

      2. The OSPF area is configured improperly.

      3. The network wildcard mask is configured improperly.

      4. The network number is configured improperly.

      5. The AS is configured improperly.

      6. The network subnet mask is configured improperly.

Answer: C Explanation:

When configuring OSPF, the mask used for the network statement is a wildcard mask similar to an access list. In this specific example, the correct syntax would have been “network 10.0.0.0 0.0.0.255 area 0.”

Question No: 145 – (Topic 3)

Refer to the exhibit.

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What is the effect of the configuration that is shown?

  1. It configures SSH globally for all logins.

  2. It tells the router or switch to try to establish an SSh connection first and if that fails to use Telnet.

  3. It configures the virtual terminal lines with the password 030752180500.

  4. It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports.

  5. It allows seven failed login attempts before the VTY lines are temporarily shutdown.

Answer: D Explanation:

Secure Shell (SSH) is a protocol which provides a secure remote access connection to network devices. Communication between the client and server is encrypted in both SSH version 1 and SSH version 2. If you want to prevent non-SSH connections, add the “transport input ssh” command under the lines to limit the router to SSH connections only. Straight (non-SSH) Telnets are refused.

Reference: www.cisco.com/warp/public/707/ssh.shtml

Question No: 146 – (Topic 3)

Which command would you use on a Cisco router to verify the Layer 3 path to a host?

  1. tracert address

  2. traceroute address

  3. telnet address

  4. ssh address

Answer: B Explanation:

In computing, traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop indicates the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated. Ping, on the other hand, only computes the final round-trip times from the destination point.

Question No: 147 – (Topic 3)

Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated, but they are unable to communicate. The Atlanta router is known to have the correct configuration.

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Given the partial configurations, identify the fault on the Brevard router that is causing the lack of connectivity.

  1. incompatible IP address

  2. insufficient bandwidth

  3. incorrect subnet mask

  4. incompatible encapsulation

  5. link reliability too low

  6. IPCP closed

Answer: D Explanation:

Because Interface Serial 0 of Atlanta Router has 192.168.10.1 And Interface Serial 1 of Router Brevard has 192.168.11.2. These are from different network.

Question No: 148 – (Topic 3)

A network administrator needs to allow only one Telnet connection to a router. For anyone viewing the configuration and issuing the show run command, the password for Telnet access should be encrypted. Which set of commands will accomplish this task?

  1. service password-encryption

    access-list 1 permit 192.168.1.0 0.0.0.255

    line vty 0 4 login

    password cisco access-class 1

  2. enable password secret line vty 0

    login

    password cisco

  3. service password-encryption line vty 1

    login

    password cisco

  4. service password-encryption line vty 0 4

login

password cisco

Answer: C Explanation:

Only one VTY connection is allowed which is exactly what#39;s requested. Incorrect answer: command.

line vty0 4

would enable all 5 vty connections.

Question No: 149 – (Topic 3)

When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?

  1. exstart state gt; loading state gt; exchange state gt; full state

  2. exstart state gt; exchange state gt; loading state gt; full state

  3. exstart state gt; full state gt; loading state gt; exchange state

  4. loading state gt; exchange state gt; full state gt; exstart state

Answer: B Explanation:

When OSPF adjacency is formed, a router goes through several state changes before it becomes fully adjacent with its neighbor. Those states are defined in the OSPF RFC 2328, section 10.1. The states are (in order) Down, Attempt, Init, 2-Way, Exstart, Exchange, Loading, and Full.

Reference: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first- ospf/13685-13.html

Question No: 150 – (Topic 3)

Refer to the exhibit.

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Assuming that the entire network topology is shown, what is the operational status of the interfaces of R2 as indicated by the command output shown?

  1. One interface has a problem.

  2. Two interfaces have problems.

  3. The interfaces are functioning correctly.

  4. The operational status of the interfaces cannot be determined from the output shown.

Answer: C Explanation:

The output shown shows normal operational status of the router’s interfaces. Serial0/0 is down because it has been disabled using the “shutdown” command.

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